8378283643 has 8 divisors (see below), whose sum is σ = 8828165120. Its totient is φ = 7929294120.

The previous prime is 8378283637. The next prime is 8378283649. The reversal of 8378283643 is 3463828738.

It is an interprime number because it is at equal distance from previous prime (8378283637) and next prime (8378283649).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8378283643 - 2⁹ = 8378283131 is a prime.

It is a super-2 number, since 2×8378283643² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8378283649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203655 + ... + 241312.

It is an arithmetic number, because the mean of its divisors is an integer number (1103520640).

Almost surely, 2^8378283643 is an apocalyptic number.

8378283643 is a deficient number, since it is larger than the sum of its proper divisors (449881477).

8378283643 is a wasteful number, since it uses less digits than its factorization.

8378283643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445977.

The product of its digits is 4644864, while the sum is 52.

The square root of 8378283643 is about 91532.9647886487. The cubic root of 8378283643 is about 2031.0394219914.

The spelling of 8378283643 in words is "eight billion, three hundred seventy-eight million, two hundred eighty-three thousand, six hundred forty-three".